﻿<RadzenDataGrid @bind-Value=@selectedItems Data="@data" TItem="IDictionary<string, object>" ColumnWidth="200px"
                AllowFiltering="true" FilterPopupRenderMode="PopupRenderMode.OnDemand" FilterMode="FilterMode.Advanced" AllowPaging="true" AllowSorting="true">
    <Columns>
        @foreach (var column in columns)
        {
            <RadzenDataGridColumn @key=@column.Key Title="@column.Key" Type="column.Value"
                                  Property="@PropertyAccess.GetDynamicPropertyExpression(column.Key, column.Value)">
                <Template>
                    @context[@column.Key]
                </Template>
            </RadzenDataGridColumn>
        }
    </Columns>
</RadzenDataGrid>

@code {
    IList<IDictionary<string, object>> selectedItems;

    public IEnumerable<IDictionary<string, object>> data { get; set; }

    public IDictionary<string, Type> columns { get; set; }

    public enum EnumTest
    {
        EnumValue1,
        EnumValue2
    }

    protected override async Task OnInitializedAsync()
    {
        await base.OnInitializedAsync();

        columns = new Dictionary<string, Type>()
        {
            { "Employee ID", typeof(int?) },
            { "MyColumn", typeof(EnumTest?) },
            { "FirstName", typeof(string) },
            { "LastName", typeof(string) },
            { "HireDate", typeof(DateTime?) },
            { "DateOnly", typeof(DateOnly?) },
            { "TimeOnly", typeof(TimeOnly?) },
            { "UID", typeof(Guid?) },
        };

        foreach (var i in Enumerable.Range(0, 50))
        {
            columns.Add($"Column{i}", typeof(string));
        }

        data = Enumerable.Range(0, 100).Select(i =>
        {
            var row = new Dictionary<string, object>();

            foreach (var column in columns)
            {
                row.Add(
                    column.Key,
                    column.Value == typeof(EnumTest?)
                        ? i == 0 ? null : (i % 2 == 0 ? EnumTest.EnumValue1 : EnumTest.EnumValue2)
                        : column.Value == typeof(int?)
                            ? i == 0 ? null : i
                            : column.Value == typeof(DateTime?)
                                ? i == 0 ? null : DateTime.Now.AddMonths(i)
                                : column.Value == typeof(Guid?)
                                ? i == 0 ? null : Guid.NewGuid()
                                : column.Value == typeof(DateOnly?)
                                ? i == 0 ? null : DateOnly.FromDateTime(DateTime.Now.AddMonths(i))
                                : column.Value == typeof(TimeOnly?)
                                ? i == 0 ? null : TimeOnly.FromDateTime(DateTime.Now.AddMonths(i))
                                : $"{column.Key}{i}" 
                );
            }

            return row;
        }).ToList();
    }
}